Up for auction at Sotheby’s, the collection of Tempelsman’s personal effects includes a Cartier Tank watch Jackie O. gifted him.
AMNH to Completely Redesign Gem and Mineral Halls
New York City’s American Museum of Natural History is giving the exhibits a facelift in time to celebrate its 150th anniversary.

New York--The gem and mineral halls at New York City’s American Museum of Natural History will soon be getting a facelift.
The museum announced Monday morning that it will undertake a complete redesign of the halls, transforming the 11,000-square-foot space into a “gleaming showcase” for the world-renowned collection.
Construction will begin when the current halls close on Oct. 26.
The American Museum of Natural History is home to about 105,000 minerals and 5,000 gems.
The specimens there have been displayed in several different galleries over the years. Until 1974, the J. Pierpont Morgan Memorial Hall of Minerals and Gems on the 4 floor was the primary display area. Then in May 1976, the current Morgan Memorial Hall of Gems and Harry Frank Guggenheim Hall of Minerals opened on the first floor.
Now, the exhibits will be renamed for Roberto and Allison Mignone, longstanding supporters of and volunteers at the museum.
The redesigned halls will aim to tell the story of how the different types of minerals arose on the planet, how scientists classify them and how humans have fashioned them into gems and used them for personal adornment, tools and technology throughout history, curated by George Harlow, who also serves as curator of the museum’s Division of Physical Sciences.
“Forty-plus years ago, when the current galleries were designed, scientists had not yet begun to explore the concept of mineral evolution,” he said. “Today, we work within a different framework, where much of the diversity of minerals on our dynamic planet is directly connected to the evolution of life. Our new exhibits will allow us to tell how the story of minerals is linked with their natural environment and biology on the one hand and with culture and technology on the other.”
The Mignone Halls of Gems and Minerals will feature new large-scale acquisitions, like the 563-carat Star of India sapphire and the 632-carat Patricia emerald, as well as pieces from the collection that haven’t been on display for decades.
Other elements currently planned for the new halls are a “Crystal Garden” main exhibition area with large-scale specimens from around the world and zones that highlight a variety of processes and environments that shape mineral formation; a gem gallery with a case featuring the museum’s most precious gems; a case dedicated to the minerals of New York City, including the “Subway Garnet;” a dedicated space for temporary exhibitions; and a fluorescence and phosphorescence gallery.
And where it previously formed a cul-de-sac in the museum, the exhibit now will have a passage to the new Center for Science, Education and Innovation to allow for the better flow of museum guests.
To celebrate the redesign, the museum unveiled one of the new halls’ featured specimens, a 12-foot-tall amethyst geode, which was recently acquired from Uruguay and which will be on temporary view in the museum’s Grand Gallery through the 2017 holiday season.
The museum said the piece, which will be a centerpiece in the new halls once they are open, is among the largest amethyst geodes in the world.
The renovation of the Halls of Gems and Minerals, designed by Ralph Appelbaum Associates, comes as part of a series of physical and programmatic enhancements to the historic parts of the museum as it gets ready to celebrate its 150th anniversary in 2019. The Halls are expected to open that year.
The Latest

The Miami-based fine jewelry brand will host its first summer residency in the Colorado mountain town from June 5 to Aug. 23.

The organization also announced its international board of directors for the 2026-2027 term.

As gold prices rise, today’s retailers are looking for alternatives at prices that will appeal to wider audiences.

Saks Global confirmed the closure this week, spelling the end for a store that’s been part of downtown Dallas for more than 100 years.


Smith discusses how managers should handle a top performer's exit, warning that a poor response could have a lasting impact.

The Gemological Institute of America is now a 30 percent stakeholder in Tracr, the De Beers-backed blockchain for diamonds.

With the trade and customer trust in mind, GIA® developed NextGem™ – on-demand training designed specifically for retail.

The retailer is bringing Rolex Certified Pre-Owned watches to five U.S. cities in 2026 for collectors to see, try on, and purchase.

The actress and entrepreneur stars in the jeweler’s new campaign that celebrates life’s quiet moments.

The price of gold has risen, affecting the number of pieces designers make, the materials they use, and how they position themselves.

The jewelry retailer is zeroing in on Zales, Jared, Kay Jewelers, and Blue Nile as it looks to create unique brand identities for each.

Sotheby’s has appointed the former Phillips executive as its global head of private sales and retail in its watches division.

A private collection of five Paraíba tourmalines also will be up for sale at Sotheby’s High Jewelry auction in New York, scheduled for June 16.

From Gen Z’s view of luxury to “doom spending,” these are the six consumer trends to note this year.

The show started by honoring Mildred Marcano, ended with a tearful Beth Anne Bonanno, and recognized a dozen-plus designers in between.

The miner said demand for higher-quality emeralds is stable, but there is notable caution in the market.

The “River of Heaven” necklace, our Piece of the Week debuting at Couture, combines 26 salt and pepper diamonds spaced by Tahitian pearls.

This year’s inductees include second-, third-, and fourth-generation jewelers.

The author, speaker, and entrepreneur will give his presentation, “Spiritual Billionaire,” on Saturday morning.

Three-time Grammy award-winning artist Nelly is set to perform at the annual event at Tao Beach on Sunday night.

Signet will integrate the online-only, natural diamond-focused jeweler into Blue Nile, which it wants to position as a higher-end retailer.

These up-and-coming jewelry brands are bringing their distinct aesthetic and unique point-of-view to the Design Atelier for the first time.

The lab’s proprietary diamond cut grade has been expanded to include the popular fancy shape.

This year, it’s what could happen outside of show hours that worries JSA Executive Vice President Scott Guginsky.

High-end fashion houses know how to emotionally connect with customers online. Retail jewelers should take note, Emmanuel Raheb writes.

The designers are the third cohort of mentees from the show’s Belonging @ Couture mentorship program.


























